Water

The event was staged to call awareness to increased poaching that is rapidly pushing populations of African elephants, rhinos, and other species toward extinction, according to the Interior Department.

The study presents evidence that EPA has been underestimating the public health benefits of controlling metals including arsenic and hexavalent chromium (which can increase the risk of cancer), as well as lead and mercury (which can cause brain damage) released by power plants into rivers, streams, and lakes.

Its purpose is to provide expert scientific advice, information, and recommendations to the Office of Pollution Prevention and Toxics, which manages programs under the Toxic Substances Control Act and the Pollution Prevention Act.

The items EPA issued June 10 "lay the necessary foundation for the development and implementation of a domestic aircraft standard, in accordance with U.S. law and the ICAO process," according to the agency's announcement.

With the EPA proposing to lower the primary ozone standard from 75 ppb to 70 or 65 ppb, researchers at the University of Colorado Boulder and the NOAA have created a commentary on how the new standard could make research more difficult for air quality managers at both local and state levels.

"The grants will help transform brownfield sites, such as former manufacturing and mill sites, into productive end uses which directly benefit community residents and create opportunities, including increased housing options, recreational spaces, and jobs," said Mathy Stanislaus, assistant administrator of EPA's Office of Solid Waste and Emergency Response.

Exposure to the pollution caused by such things as car exhaust and coal-fired power plants may be associated with an increased risk of autism spectrum disorder, a University of Pittsburgh study has found.

Tens of thousands of liters of spilled oil from a broken underground pipeline threatened protected waters and wildlife on California's southern coast Wednesday, as US federal and local authorities rushed to contain its spread.

Duke Energy, the nation's largest electrical utility, pleaded guilty in federal court Thursday to nine criminal violations of the Clean Water Act for polluting four major rivers for several years with toxic coal ash from five power plants in North Carolina.